GRANT-THORNTON — IP ranges & network footprint

Footprint over time

10 weekly snapshots · JSON

13 +3 netblocks since 2026-07-05

2026-07-05 peak 13 2026-08-30

IP Ranges (13)

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CIDR	Org name	Registry	Status	Confidence
62.111.142.208/29	GRANT-THORNTON	RIPE	ASSIGNED PA	● low
62.111.142.240/29	GRANT-THORNTON	RIPE	ASSIGNED PA	● low
78.11.64.48/30	GRANT-THORNTON	RIPE	ASSIGNED PA	● low
81.187.9.71/32	GRANT-THORNTON	RIPE	ASSIGNED PA	● low
81.210.120.144/29	GRANT-THORNTON	RIPE	ASSIGNED PA	● low
193.92.98.72/29	GRANT-THORNTON	RIPE	ASSIGNED PA	● low
195.77.187.8/29	GRANT_THORNTON	RIPE	ASSIGNED PA	● low
195.97.51.16/29	GRANT_THORNTON	RIPE	ASSIGNED PA	● low
195.97.60.64/28	GRANT_THORNTON	RIPE	ASSIGNED PA	● low
195.235.68.40/29	GRANT_THORNTON	RIPE	ASSIGNED PA	● low
213.137.2.0/29	Grant-Thornton-Ltd	RIPE	ASSIGNED PA	● low
2a00:2381:111d::/48	GRANT-THORNTON	RIPE	AGGREGATED-BY-LIR	● low
2a00:2381:2699::/48	GRANT-THORNTON	RIPE	AGGREGATED-BY-LIR	● low

IPv6 ranges (2)

CIDR
2a00:2381:111d::/48
2a00:2381:2699::/48

Possibly related to this organisation

what's this?

Same name family

Separately-registered clusters whose names share “GRANT THORNTON” — often per-country or per-system registrations of the same brand, occasionally a different organisation sharing the name. Not counted in this organisation's own footprint.

GRANT-THORNTON-UK-LLP 13 blocks
Grant Thornton Australia Limited 4 blocks
GRANT-THORNTON 3 blocks
Grant-Thornton-Pfeiffer-GmbH 2 blocks
GRANT-THORNTON-CZ 2 blocks
GRANT-THORNTON-STATSAUT-REVISIONSPARTNER 1 blocks
Grant_Thornton_LTZ 1 blocks
GRANT-THORNTON-UK-ADVISORY-TAX-LLP 1 blocks

Combined view of all 13 name-family clusters →

Sub-allocations under carriers

IP blocks an ISP reassigned to a similarly-named customer — decoded from the ISP's own naming convention, not a direct registration.

Grant_Thornton_LTZ via Frampol Investments sub-allocation
Grant_Thornton_Byo_LTZ via Frampol Investments sub-allocation
IPv6_Range_for_Grant_Thornton_AG_over_NetCom_BW via NetCom BW GmbH sub-allocation
Grant-Thornton-Anwar-Al-Qatami via Fast Communication Company Ltd sub-allocation
APOLLO-GRANT-THORNTON-RIMESS-SIA via SIA Tet sub-allocation
Grant Thornton SLP via TELEFONICA DE ESPANA S.A.U. sub-allocation
Grant Thornton via Orange S.A. sub-allocation
Data Center Obs Grant Thornton via Orange S.A. sub-allocation

Network trust

what's this?

RPKI hygiene: B how networks compare →

92.3% of checked blocks have valid RPKI ROA coverage (12 of 13)

Possible discrepancies (2)

These blocks are registered to GRANT-THORNTON but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

2a00:2381:111d::/48 /48	authorized for AS2856 — British Telecommunications Limited
2a00:2381:2699::/48 /48	authorized for AS2856 — British Telecommunications Limited

NIC Handles

AA BTNET-MNT DUMY-RIPE DUMY-RIPE FORTHNETGR-MNT MAINT-AS3352 MANX-TELECOM-MNT NETIA-MNT PANAFON-MNT

Netblocks	13
IPv6	2 prefixes (largest 2a00:2381:111d::/48)
Registered in	Poland (4) · Greece (3) · Spain (2) · United Kingdom (1) · IM (1)
All fragments	44 blocks across 13 clusters
Cluster ID	232119051
Registry	RIPE
Customers	find customers using this network →

Attribution	BGP parent (inherited)
Shared handles	clustered on 9 shared RIR contact/maintainer handles
Registry names	3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue